William j



v(N0 Model.) l

W. J. NEIDL.

n LOCK. No. 503,706. Pautemized Aug. 22, 1893.

.i UNITED STATES PATENT OFFICE.

WILLIAM J. NEIDL, OF NEW BRITAIN, CONNECTICUT.

LOCK.

SPECIFICATION forming part of Letters Patent No. 503,706, dated August22, 1893.

Application lecl March l5, 1 89 3 To all whom, it may concern:

Be it known that I, WILLIAM .1. NEIDL, a citizen of the United States,residing at New Britain, in thecounty of Hartford and State ofConnecticut, have invented certain new and useful Improvements in Locks,of which the following is a specification.

My invention relates to improvements in locks, and the object of myimprovement is mainly to produce an eflicient and closely adjusted lockand one that is easily operated and by reason of its simple constructionmay be produced at a small cost.

In the accompanying drawings: Figui-e1 is a front elevation of my lockwith the cap plate removed. Fig. 2 is a like view of the same with theparts in a dierent position and with a portion of the lock bolt and faceplate broken away. Fig. 3 is a vertical section of the same on the lineof Fig. 1 looking toward the right, and Fig. 4 is a like section on thesame line looking in the opposite direction.

A designates the main portion of the case, B the face plate and C thecap, A slotted cylinder or key hub 5 is arranged to partially rotate insuitable bearings in the two sides of the case and is acted upon by aspring 6 to hold it in its normal position, said spring being connectedby one end to an arm on said cylinder or hub, and by its opposite end toa pin on the case. This key cylinder or hub is provided With a stop pin7, which coming in contact with a stop shoulder 8 on the case, limitsthe movement of the hub in one direction so that the spring holds itwith the key slot 9 in substantially a horizontal position, while at thesame time said hubis free to be rotated in a direction to bring the openside of the slotted hub toward the tumblers 10. The bolt D is thrownoutwardly by means of an arm 11 on the hub 12 which has its bearings inthe two sides of the case and which may be operated by a suitable shaftand turn button from either side of the door. Aspring 13 is secured tothe case with one end resting in a slot in the lock bolt D as shown inFig. l which acts to force the lock bolt into the case asin Fig. 2whenever the lock bolt is free. The lower end of this spring 13, in Fig.2, is

Serial No. 466,066. (No model.)

broken away in order to show other parts. This lock bolt D is providedwith a fence 14 for being engaged by the endsof the tumblers 10, and atanother point with the fence 15 for beingvengaged by the shoulders 16 ofthe tu mblers l0. Then the lock boltis turned out, as in Fig. 1,the endsof the tumblers rest against the fence 14 so as to hold the bolt in thatposition. By' inserting the key in the slot 9 of the cylinder or key hub5 and turning the key to bring its bitted edge upwardly under thetumblers, the tumblers are all lifted so that their ends clear the fence14, while the shoulders 16 will at the same time clear the fence 15 andpermit that portion of the tumblers to pass between the fences,supposing of course that a properly bitted key has been inserted. Uponrelease of the key, the spring 6 immediately returns the key hub 0rcylinder, together with the key, to its normal position. In order toagain throw out the bolt for locking the door, the turn button, carryingthe hub 12 and arm 11 is operated to lthrow the bolt from the positionshown in Fig. 2 to that shown in Fig. 1.

In order to prevent the lock bolt from being operated to force it out bythe turn button of the hub 12 during the day,I provide the stop 17 whoseiiattened end projects through a bearing in the face plate as shown inFig. 2, while its opposite end is provided with a crank pin 18 forthrowing the slide 19 to project its end into the notch 2O in the lockbolt as shown in Fig. 2; but whenever desired, this stop may be turnedfrom the position shown in Fig.2 to that shown in Fig.1so as to withdrawthe slide 19 from the bolt and permit the bolt to be turned outwardlyagain by the turn button of the hub 12. The tumblers 10 are providedwith the usual springs 21 for pressing them downwardly.

I claim as my invention- 1. The combination of the lock bolt D havingthe fence 14 at one point and the fence 15 above the same but at adifferent point in its 9 length, a series of tumblers 10 having theirends fitted to abut against the fence 14 and the shouldered portion 16for engaging the fence 15, the width of the tumbler being such that aportion of it may pass the confronting IOO for throwing it inwardly, aset of tumblers for and slide for looking said bolt in. its retracted i5 holding it in its projected position, the key position, substantiallyas described and for cylinder or hub 5 provided With a stop device thepurpose specified.

and the spring 6 for holding said hub inv its l .i WILLIAM J NEIDLnormal position, substantially as described and for the purposespecified. Witnesses:

1o 3. The combination of the bolt D,the spring A GEORGE C. I-IESSLER,

for throwing it inwardly, a set of tumblers VALENTINEBOLLERER, J r.

` faces of said fences, substantially as described for holding it in itsprojected position, the and for the purpose specified. y turn button'forthrowing saidboltl) inwardly 2. Thecombination of the boltD, the springagainstthe action of said spring and the stop

